AFCT-5705LZ Avago Technologies US Inc., AFCT-5705LZ Datasheet - Page 3

• Manufacturer Part Number: AFCT-5705LZ
• Description: LX SFP Std Delatch RoHS
• Manufacturer: Avago Technologies US Inc.
• Series: -r

Specifications of AFCT-5705LZ

• Mounting Type: SFP
• Voltage - Supply: 3.14 V ~ 3.47 V
• Connector Type: LC Duplex
• Applications: Ethernet
• Wavelength: 1310nm
• Data Rate: 1.25Gbd
• Product: Transceiver
• Maximum Rise Time: 400 ps, 260 ps
• Maximum Fall Time: 400 ps, 260 ps
• Pulse Width Distortion: 0.227 ns, 0.267 ns
• Operating Supply Voltage: 3.14 V to 3.47 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 10 C
• Package / Case: SFP-20
• Function: SFP Optical Transceivers with Optional DMI for Gigabit Ethernet
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: Singlemode Glass
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 2. Pin description of the SFP electrical interface.
Figure 3. Typical Application Configuration
3
106.25 MHz
20
19
18
17
16
15
14
13
12
11
PROTOCOL
V
TD–
TD+
V
V
V
V
RD+
RD–
V
EE
EE
CC
CC
EE
EE
REFCLK
TOP OF BOARD
T
T
R
R
T
R
IC
Tx_FAULT
Rx_RATE
Rx_LOS
GPIO(X)
GPIO(X)
EWRAP
VREFR
GP14
RBC
TBC
3 2 1
ENGAGEMENT
SEQUENCE
TX[0:9]
TBC
EWRAP
RX[0:9]
RBC
Rx_RATE
(AS VIEWED THROUGH TOP OF BOARD)
3.3 V
REFCLK
10
VREFR
1
2
3
4
5
6
7
8
9
3.3 V
BOTTOM OF BOARD
V
TX FAULT
TX DISABLE
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
RATE SELECT
LOS
V
V
EE
EE
EE
T
R
R
4.7 K to 10 KΩ
10 μF
SO+
SO–
SI+
SI–
100 Ω
0.1 μF
3 2 1
4.7 K to 10 KΩ
4.7 K to
10 KΩ
50 Ω
50 Ω
50 Ω
50 Ω
Transmitter Section
The transmitter section includes a 1310 nm Fabry-Perot
laser and a transmitter driver circuit. The driver circuit
maintains a constant optical power level provided that
the data pattern is valid 8B/10B code. Connection to the
transmitter is provided via a LC optical connector.
The transmitter has full IEC 60825 and CDRH Class 1 eye
safety.
TX_DISABLE
The transmitter output can be disabled by asserting pin
3, TX_DISABLE. A high signal asserts this function while
a low signal allows normal laser operation. In addition,
via the 2-wire serial interface the transmitter output can
be disabled (address A2h, byte 110, bit 6) or monitored
(address A2h, byte 110, bit 7). The contents of A2h, byte
110, bit 6 are logic OR’d with hardware Tx_Disable (pin
3) to control transmitter operation. In the event of a
transceiver fault, such as the activation of the eye safety
circuit, toggling of the TX_DISABLE will reset the trans-
mitter, as depicted in Figure 4.
4.7 K to
10 KΩ
1 μH
1 μH
10 μF
4.7 K to
10 KΩ
Tx_DISABLE
Tx_FAULT
0.1 μF
MOD_DEF2
MOD_DEF1
MOD_DEF0
Rx_LOS
3.3 V
RD+
RD–
TD+
TD–
0.1
RX GND
TX GND
μF
V CC ,T
V CC ,R
0.01 μF
0.01 μF
0.01 μF
0.01 μF
4.7 K to 10 KΩ
V CC ,R
V CC ,R
100 Ω
SFP MODULE
50 Ω
50 Ω
AMPLIFICATION
QUANTIZATION
LASER DRIVER
EEPROM
CIRCUITRY
& SAFETY
&